Qt: how to check if combobox is expanded?

Question

Qt

Actually, a question. How to check if a QComboBox is expanded in Qt?
I need to put a QComboBox editor in a table (done), and pressing the ↓ key should move down the table below - but only when the list is not expanded.

Answer 1

Override virtual methods for QComboBox:

QComboBox::showPopup()
QComboBox::hidePopup()